US3219950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-loss continuously variable delay line
Assignee: Individual
•
Filing: 1963-10-09
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Granted: 1965-11-23
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Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Brueckmann Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
H; H01; H01P; H01P9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CONTINUOUSLY VARIABLE, LOW-LOSS DELAY LINE COMPRISING A PAIR OF CONDUCTORS, A FERRITE DIELECTRIC INTERMEDIATE SAID CONDUCTORS, SAID FERRITE DIELECTRIC BEING ADAPTED TO BE SLIDABLY POSITIONED WITH RESPECT TO SAID CONDUCTORS SUCH THAT WHEN IN ONE EXTREME POSITION THE FERRITE DIELECTRIC AND SAID CONDUCTORS ARE COEXTENSIVE, AND WHEN IN THE OTHER EXTREME POSITION, THE FERRITE DIELECTRIC IS COMPLETELY REMOVED FROM THE SPACING BETWEEN SAID CONDUCTORS AND REPLACED BY AN AIR DIELECTRIC, THE EFFECTIVE RELATIVE PERMEABILITY UEFF AND THE EFFECTIVE RELATIVE DIELECTRIC EEFF BEING EQUAL WHEN THE AIR SPACING BETWEEN SAID CONDUCTORS IS REPLACED BY SAID FERRITE DIELECTRIC.
Claim 2
Dependent Claim
97 words
A CONTINUOUSLY VARIABLE, LOW-LOSS DELAY LINE COMPRISING A PAIR OF CONDUCTORS, A FERRITE DIELECTRIC INTERMEDIATE SAID CONDUCTORS, SAID FERRITE DIELECTRIC BEING ADAPTED TO BE SLIDABLY POSITIONED WITH RESPECT TO SAID CONDUCTORS SUCH THAT WHEN IN ONE EXTREME POSITION THE FERRITE DIELECTRIC AND SAID CONDUCTORS ARE COEXTENSIVE, AND WHEN IN THE OTHER EXTREME POSITION, THE FERRITE DIELECTRIC IS COMPLETELY REMOVED FROM THE SPACING BETWEEN SAID CONDUCTORS AND REPLACED BY AN AIR DIELECTRIC, THE EFFECTIVE RELATIVE PERMEABILITY UEFF AND THE EFFECTIVE RELATIVE DIELECTRIC EEFF BEING EQUAL WHEN THE AIR SPACING BETWEEN SAID CONDUCTORS IS REPLACED BY SAID FERRITE DIELECTRIC.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |